The Reverend Endicott Peabody (May 30, 1857 – November 17, 1944) was the American Episcopal priest who founded the Groton School for Boys (known today simply as Groton School), in Groton, Massachusetts in 1884.
Peabody also founded St.
Andrew's Episcopal Church in Ayer, Massachusetts, in October 1889.
Peabody served as headmaster at the school from 1884 until 1940 and also served as a trustee at Lawrence Academy at Groton.
In 1926, Peabody also founded Brooks School, which was named for 19th-century clergyman Phillips Brooks, a well-known preacher and resident of North Andover, Massachusetts.
Peabody was headmaster for Franklin D.
Roosevelt at Groton, and he officiated at Franklin's marriage to Eleanor Roosevelt, as well as those of their children.
A 1944 Time magazine article described him as "the most famed U.S.